1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * load/unload driver, mount/dismount volumes
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
26 #include <linux/module.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <linux/highmem.h>
31 #include <linux/init.h>
32 #include <linux/random.h>
33 #include <linux/statfs.h>
34 #include <linux/moduleparam.h>
35 #include <linux/blkdev.h>
36 #include <linux/socket.h>
37 #include <linux/inet.h>
38 #include <linux/parser.h>
39 #include <linux/crc32.h>
40 #include <linux/debugfs.h>
41 #include <linux/mount.h>
42 #include <linux/seq_file.h>
43 #include <linux/quotaops.h>
45 #define CREATE_TRACE_POINTS
46 #include "ocfs2_trace.h"
48 #include <cluster/masklog.h>
52 /* this should be the only file to include a version 1 header */
53 #include "ocfs1_fs_compat.h"
56 #include "blockcheck.h"
59 #include "extent_map.h"
60 #include "heartbeat.h"
63 #include "localalloc.h"
72 #include "refcounttree.h"
75 #include "buffer_head_io.h"
77 static struct kmem_cache
*ocfs2_inode_cachep
= NULL
;
78 struct kmem_cache
*ocfs2_dquot_cachep
;
79 struct kmem_cache
*ocfs2_qf_chunk_cachep
;
81 /* OCFS2 needs to schedule several different types of work which
82 * require cluster locking, disk I/O, recovery waits, etc. Since these
83 * types of work tend to be heavy we avoid using the kernel events
84 * workqueue and schedule on our own. */
85 struct workqueue_struct
*ocfs2_wq
= NULL
;
87 static struct dentry
*ocfs2_debugfs_root
= NULL
;
89 MODULE_AUTHOR("Oracle");
90 MODULE_LICENSE("GPL");
94 unsigned long commit_interval
;
95 unsigned long mount_opt
;
96 unsigned int atime_quantum
;
99 unsigned int resv_level
;
101 char cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
104 static int ocfs2_parse_options(struct super_block
*sb
, char *options
,
105 struct mount_options
*mopt
,
107 static int ocfs2_check_set_options(struct super_block
*sb
,
108 struct mount_options
*options
);
109 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
);
110 static void ocfs2_put_super(struct super_block
*sb
);
111 static int ocfs2_mount_volume(struct super_block
*sb
);
112 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
);
113 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
);
114 static int ocfs2_initialize_mem_caches(void);
115 static void ocfs2_free_mem_caches(void);
116 static void ocfs2_delete_osb(struct ocfs2_super
*osb
);
118 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
);
120 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
);
122 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
);
123 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
);
124 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
);
125 static int ocfs2_check_volume(struct ocfs2_super
*osb
);
126 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
127 struct buffer_head
*bh
,
129 struct ocfs2_blockcheck_stats
*stats
);
130 static int ocfs2_initialize_super(struct super_block
*sb
,
131 struct buffer_head
*bh
,
133 struct ocfs2_blockcheck_stats
*stats
);
134 static int ocfs2_get_sector(struct super_block
*sb
,
135 struct buffer_head
**bh
,
138 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
);
139 static void ocfs2_destroy_inode(struct inode
*inode
);
140 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
);
141 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
);
142 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
);
144 static const struct super_operations ocfs2_sops
= {
145 .statfs
= ocfs2_statfs
,
146 .alloc_inode
= ocfs2_alloc_inode
,
147 .destroy_inode
= ocfs2_destroy_inode
,
148 .drop_inode
= ocfs2_drop_inode
,
149 .evict_inode
= ocfs2_evict_inode
,
150 .sync_fs
= ocfs2_sync_fs
,
151 .put_super
= ocfs2_put_super
,
152 .remount_fs
= ocfs2_remount
,
153 .show_options
= ocfs2_show_options
,
154 .quota_read
= ocfs2_quota_read
,
155 .quota_write
= ocfs2_quota_write
,
182 Opt_coherency_buffered
,
189 static const match_table_t tokens
= {
190 {Opt_barrier
, "barrier=%u"},
191 {Opt_err_panic
, "errors=panic"},
192 {Opt_err_ro
, "errors=remount-ro"},
194 {Opt_nointr
, "nointr"},
195 {Opt_hb_none
, OCFS2_HB_NONE
},
196 {Opt_hb_local
, OCFS2_HB_LOCAL
},
197 {Opt_hb_global
, OCFS2_HB_GLOBAL
},
198 {Opt_data_ordered
, "data=ordered"},
199 {Opt_data_writeback
, "data=writeback"},
200 {Opt_atime_quantum
, "atime_quantum=%u"},
201 {Opt_slot
, "preferred_slot=%u"},
202 {Opt_commit
, "commit=%u"},
203 {Opt_localalloc
, "localalloc=%d"},
204 {Opt_localflocks
, "localflocks"},
205 {Opt_stack
, "cluster_stack=%s"},
206 {Opt_user_xattr
, "user_xattr"},
207 {Opt_nouser_xattr
, "nouser_xattr"},
208 {Opt_inode64
, "inode64"},
210 {Opt_noacl
, "noacl"},
211 {Opt_usrquota
, "usrquota"},
212 {Opt_grpquota
, "grpquota"},
213 {Opt_coherency_buffered
, "coherency=buffered"},
214 {Opt_coherency_full
, "coherency=full"},
215 {Opt_resv_level
, "resv_level=%u"},
216 {Opt_dir_resv_level
, "dir_resv_level=%u"},
220 #ifdef CONFIG_DEBUG_FS
221 static int ocfs2_osb_dump(struct ocfs2_super
*osb
, char *buf
, int len
)
223 struct ocfs2_cluster_connection
*cconn
= osb
->cconn
;
224 struct ocfs2_recovery_map
*rm
= osb
->recovery_map
;
225 struct ocfs2_orphan_scan
*os
= &osb
->osb_orphan_scan
;
228 out
+= snprintf(buf
+ out
, len
- out
,
229 "%10s => Id: %-s Uuid: %-s Gen: 0x%X Label: %-s\n",
230 "Device", osb
->dev_str
, osb
->uuid_str
,
231 osb
->fs_generation
, osb
->vol_label
);
233 out
+= snprintf(buf
+ out
, len
- out
,
234 "%10s => State: %d Flags: 0x%lX\n", "Volume",
235 atomic_read(&osb
->vol_state
), osb
->osb_flags
);
237 out
+= snprintf(buf
+ out
, len
- out
,
238 "%10s => Block: %lu Cluster: %d\n", "Sizes",
239 osb
->sb
->s_blocksize
, osb
->s_clustersize
);
241 out
+= snprintf(buf
+ out
, len
- out
,
242 "%10s => Compat: 0x%X Incompat: 0x%X "
244 "Features", osb
->s_feature_compat
,
245 osb
->s_feature_incompat
, osb
->s_feature_ro_compat
);
247 out
+= snprintf(buf
+ out
, len
- out
,
248 "%10s => Opts: 0x%lX AtimeQuanta: %u\n", "Mount",
249 osb
->s_mount_opt
, osb
->s_atime_quantum
);
252 out
+= snprintf(buf
+ out
, len
- out
,
253 "%10s => Stack: %s Name: %*s "
254 "Version: %d.%d\n", "Cluster",
255 (*osb
->osb_cluster_stack
== '\0' ?
256 "o2cb" : osb
->osb_cluster_stack
),
257 cconn
->cc_namelen
, cconn
->cc_name
,
258 cconn
->cc_version
.pv_major
,
259 cconn
->cc_version
.pv_minor
);
262 spin_lock(&osb
->dc_task_lock
);
263 out
+= snprintf(buf
+ out
, len
- out
,
264 "%10s => Pid: %d Count: %lu WakeSeq: %lu "
265 "WorkSeq: %lu\n", "DownCnvt",
266 (osb
->dc_task
? task_pid_nr(osb
->dc_task
) : -1),
267 osb
->blocked_lock_count
, osb
->dc_wake_sequence
,
268 osb
->dc_work_sequence
);
269 spin_unlock(&osb
->dc_task_lock
);
271 spin_lock(&osb
->osb_lock
);
272 out
+= snprintf(buf
+ out
, len
- out
, "%10s => Pid: %d Nodes:",
274 (osb
->recovery_thread_task
?
275 task_pid_nr(osb
->recovery_thread_task
) : -1));
276 if (rm
->rm_used
== 0)
277 out
+= snprintf(buf
+ out
, len
- out
, " None\n");
279 for (i
= 0; i
< rm
->rm_used
; i
++)
280 out
+= snprintf(buf
+ out
, len
- out
, " %d",
282 out
+= snprintf(buf
+ out
, len
- out
, "\n");
284 spin_unlock(&osb
->osb_lock
);
286 out
+= snprintf(buf
+ out
, len
- out
,
287 "%10s => Pid: %d Interval: %lu Needs: %d\n", "Commit",
288 (osb
->commit_task
? task_pid_nr(osb
->commit_task
) : -1),
289 osb
->osb_commit_interval
,
290 atomic_read(&osb
->needs_checkpoint
));
292 out
+= snprintf(buf
+ out
, len
- out
,
293 "%10s => State: %d TxnId: %lu NumTxns: %d\n",
294 "Journal", osb
->journal
->j_state
,
295 osb
->journal
->j_trans_id
,
296 atomic_read(&osb
->journal
->j_num_trans
));
298 out
+= snprintf(buf
+ out
, len
- out
,
299 "%10s => GlobalAllocs: %d LocalAllocs: %d "
300 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
302 atomic_read(&osb
->alloc_stats
.bitmap_data
),
303 atomic_read(&osb
->alloc_stats
.local_data
),
304 atomic_read(&osb
->alloc_stats
.bg_allocs
),
305 atomic_read(&osb
->alloc_stats
.moves
),
306 atomic_read(&osb
->alloc_stats
.bg_extends
));
308 out
+= snprintf(buf
+ out
, len
- out
,
309 "%10s => State: %u Descriptor: %llu Size: %u bits "
310 "Default: %u bits\n",
311 "LocalAlloc", osb
->local_alloc_state
,
312 (unsigned long long)osb
->la_last_gd
,
313 osb
->local_alloc_bits
, osb
->local_alloc_default_bits
);
315 spin_lock(&osb
->osb_lock
);
316 out
+= snprintf(buf
+ out
, len
- out
,
317 "%10s => InodeSlot: %d StolenInodes: %d, "
318 "MetaSlot: %d StolenMeta: %d\n", "Steal",
319 osb
->s_inode_steal_slot
,
320 atomic_read(&osb
->s_num_inodes_stolen
),
321 osb
->s_meta_steal_slot
,
322 atomic_read(&osb
->s_num_meta_stolen
));
323 spin_unlock(&osb
->osb_lock
);
325 out
+= snprintf(buf
+ out
, len
- out
, "OrphanScan => ");
326 out
+= snprintf(buf
+ out
, len
- out
, "Local: %u Global: %u ",
327 os
->os_count
, os
->os_seqno
);
328 out
+= snprintf(buf
+ out
, len
- out
, " Last Scan: ");
329 if (atomic_read(&os
->os_state
) == ORPHAN_SCAN_INACTIVE
)
330 out
+= snprintf(buf
+ out
, len
- out
, "Disabled\n");
332 out
+= snprintf(buf
+ out
, len
- out
, "%lu seconds ago\n",
333 (get_seconds() - os
->os_scantime
.tv_sec
));
335 out
+= snprintf(buf
+ out
, len
- out
, "%10s => %3s %10s\n",
336 "Slots", "Num", "RecoGen");
337 for (i
= 0; i
< osb
->max_slots
; ++i
) {
338 out
+= snprintf(buf
+ out
, len
- out
,
339 "%10s %c %3d %10d\n",
341 (i
== osb
->slot_num
? '*' : ' '),
342 i
, osb
->slot_recovery_generations
[i
]);
348 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
350 struct ocfs2_super
*osb
= inode
->i_private
;
353 buf
= kmalloc(PAGE_SIZE
, GFP_KERNEL
);
357 i_size_write(inode
, ocfs2_osb_dump(osb
, buf
, PAGE_SIZE
));
359 file
->private_data
= buf
;
366 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
368 kfree(file
->private_data
);
372 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
373 size_t nbytes
, loff_t
*ppos
)
375 return simple_read_from_buffer(buf
, nbytes
, ppos
, file
->private_data
,
376 i_size_read(file
->f_mapping
->host
));
379 static int ocfs2_osb_debug_open(struct inode
*inode
, struct file
*file
)
383 static int ocfs2_debug_release(struct inode
*inode
, struct file
*file
)
387 static ssize_t
ocfs2_debug_read(struct file
*file
, char __user
*buf
,
388 size_t nbytes
, loff_t
*ppos
)
392 #endif /* CONFIG_DEBUG_FS */
394 static const struct file_operations ocfs2_osb_debug_fops
= {
395 .open
= ocfs2_osb_debug_open
,
396 .release
= ocfs2_debug_release
,
397 .read
= ocfs2_debug_read
,
398 .llseek
= generic_file_llseek
,
401 static int ocfs2_sync_fs(struct super_block
*sb
, int wait
)
405 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
407 if (ocfs2_is_hard_readonly(osb
))
411 status
= ocfs2_flush_truncate_log(osb
);
415 ocfs2_schedule_truncate_log_flush(osb
, 0);
418 if (jbd2_journal_start_commit(OCFS2_SB(sb
)->journal
->j_journal
,
421 jbd2_log_wait_commit(OCFS2_SB(sb
)->journal
->j_journal
,
427 static int ocfs2_need_system_inode(struct ocfs2_super
*osb
, int ino
)
429 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)
430 && (ino
== USER_QUOTA_SYSTEM_INODE
431 || ino
== LOCAL_USER_QUOTA_SYSTEM_INODE
))
433 if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)
434 && (ino
== GROUP_QUOTA_SYSTEM_INODE
435 || ino
== LOCAL_GROUP_QUOTA_SYSTEM_INODE
))
440 static int ocfs2_init_global_system_inodes(struct ocfs2_super
*osb
)
442 struct inode
*new = NULL
;
446 new = ocfs2_iget(osb
, osb
->root_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
448 status
= PTR_ERR(new);
452 osb
->root_inode
= new;
454 new = ocfs2_iget(osb
, osb
->system_dir_blkno
, OCFS2_FI_FLAG_SYSFILE
, 0);
456 status
= PTR_ERR(new);
460 osb
->sys_root_inode
= new;
462 for (i
= OCFS2_FIRST_ONLINE_SYSTEM_INODE
;
463 i
<= OCFS2_LAST_GLOBAL_SYSTEM_INODE
; i
++) {
464 if (!ocfs2_need_system_inode(osb
, i
))
466 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
468 ocfs2_release_system_inodes(osb
);
471 /* FIXME: Should ERROR_RO_FS */
472 mlog(ML_ERROR
, "Unable to load system inode %d, "
473 "possibly corrupt fs?", i
);
476 // the array now has one ref, so drop this one
486 static int ocfs2_init_local_system_inodes(struct ocfs2_super
*osb
)
488 struct inode
*new = NULL
;
492 for (i
= OCFS2_LAST_GLOBAL_SYSTEM_INODE
+ 1;
493 i
< NUM_SYSTEM_INODES
;
495 if (!ocfs2_need_system_inode(osb
, i
))
497 new = ocfs2_get_system_file_inode(osb
, i
, osb
->slot_num
);
499 ocfs2_release_system_inodes(osb
);
501 mlog(ML_ERROR
, "status=%d, sysfile=%d, slot=%d\n",
502 status
, i
, osb
->slot_num
);
505 /* the array now has one ref, so drop this one */
515 static void ocfs2_release_system_inodes(struct ocfs2_super
*osb
)
520 for (i
= 0; i
< NUM_GLOBAL_SYSTEM_INODES
; i
++) {
521 inode
= osb
->global_system_inodes
[i
];
524 osb
->global_system_inodes
[i
] = NULL
;
528 inode
= osb
->sys_root_inode
;
531 osb
->sys_root_inode
= NULL
;
534 inode
= osb
->root_inode
;
537 osb
->root_inode
= NULL
;
540 if (!osb
->local_system_inodes
)
543 for (i
= 0; i
< NUM_LOCAL_SYSTEM_INODES
* osb
->max_slots
; i
++) {
544 if (osb
->local_system_inodes
[i
]) {
545 iput(osb
->local_system_inodes
[i
]);
546 osb
->local_system_inodes
[i
] = NULL
;
550 kfree(osb
->local_system_inodes
);
551 osb
->local_system_inodes
= NULL
;
554 /* We're allocating fs objects, use GFP_NOFS */
555 static struct inode
*ocfs2_alloc_inode(struct super_block
*sb
)
557 struct ocfs2_inode_info
*oi
;
559 oi
= kmem_cache_alloc(ocfs2_inode_cachep
, GFP_NOFS
);
563 jbd2_journal_init_jbd_inode(&oi
->ip_jinode
, &oi
->vfs_inode
);
564 return &oi
->vfs_inode
;
567 static void ocfs2_i_callback(struct rcu_head
*head
)
569 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
570 INIT_LIST_HEAD(&inode
->i_dentry
);
571 kmem_cache_free(ocfs2_inode_cachep
, OCFS2_I(inode
));
574 static void ocfs2_destroy_inode(struct inode
*inode
)
576 call_rcu(&inode
->i_rcu
, ocfs2_i_callback
);
579 static unsigned long long ocfs2_max_file_offset(unsigned int bbits
,
582 unsigned int bytes
= 1 << cbits
;
583 unsigned int trim
= bytes
;
584 unsigned int bitshift
= 32;
587 * i_size and all block offsets in ocfs2 are always 64 bits
588 * wide. i_clusters is 32 bits, in cluster-sized units. So on
589 * 64 bit platforms, cluster size will be the limiting factor.
592 #if BITS_PER_LONG == 32
593 # if defined(CONFIG_LBDAF)
594 BUILD_BUG_ON(sizeof(sector_t
) != 8);
596 * We might be limited by page cache size.
598 if (bytes
> PAGE_CACHE_SIZE
) {
599 bytes
= PAGE_CACHE_SIZE
;
602 * Shift by 31 here so that we don't get larger than
609 * We are limited by the size of sector_t. Use block size, as
610 * that's what we expose to the VFS.
619 * Trim by a whole cluster when we can actually approach the
620 * on-disk limits. Otherwise we can overflow i_clusters when
621 * an extent start is at the max offset.
623 return (((unsigned long long)bytes
) << bitshift
) - trim
;
626 static int ocfs2_remount(struct super_block
*sb
, int *flags
, char *data
)
628 int incompat_features
;
630 struct mount_options parsed_options
;
631 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
634 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 1) ||
635 !ocfs2_check_set_options(sb
, &parsed_options
)) {
640 tmp
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
|
642 if ((osb
->s_mount_opt
& tmp
) != (parsed_options
.mount_opt
& tmp
)) {
644 mlog(ML_ERROR
, "Cannot change heartbeat mode on remount\n");
648 if ((osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
) !=
649 (parsed_options
.mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)) {
651 mlog(ML_ERROR
, "Cannot change data mode on remount\n");
655 /* Probably don't want this on remount; it might
656 * mess with other nodes */
657 if (!(osb
->s_mount_opt
& OCFS2_MOUNT_INODE64
) &&
658 (parsed_options
.mount_opt
& OCFS2_MOUNT_INODE64
)) {
660 mlog(ML_ERROR
, "Cannot enable inode64 on remount\n");
664 /* We're going to/from readonly mode. */
665 if ((*flags
& MS_RDONLY
) != (sb
->s_flags
& MS_RDONLY
)) {
666 /* Disable quota accounting before remounting RO */
667 if (*flags
& MS_RDONLY
) {
668 ret
= ocfs2_susp_quotas(osb
, 0);
672 /* Lock here so the check of HARD_RO and the potential
673 * setting of SOFT_RO is atomic. */
674 spin_lock(&osb
->osb_lock
);
675 if (osb
->osb_flags
& OCFS2_OSB_HARD_RO
) {
676 mlog(ML_ERROR
, "Remount on readonly device is forbidden.\n");
681 if (*flags
& MS_RDONLY
) {
682 sb
->s_flags
|= MS_RDONLY
;
683 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
685 if (osb
->osb_flags
& OCFS2_OSB_ERROR_FS
) {
686 mlog(ML_ERROR
, "Cannot remount RDWR "
687 "filesystem due to previous errors.\n");
691 incompat_features
= OCFS2_HAS_RO_COMPAT_FEATURE(sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
);
692 if (incompat_features
) {
693 mlog(ML_ERROR
, "Cannot remount RDWR because "
694 "of unsupported optional features "
695 "(%x).\n", incompat_features
);
699 sb
->s_flags
&= ~MS_RDONLY
;
700 osb
->osb_flags
&= ~OCFS2_OSB_SOFT_RO
;
702 trace_ocfs2_remount(sb
->s_flags
, osb
->osb_flags
, *flags
);
704 spin_unlock(&osb
->osb_lock
);
705 /* Enable quota accounting after remounting RW */
706 if (!ret
&& !(*flags
& MS_RDONLY
)) {
707 if (sb_any_quota_suspended(sb
))
708 ret
= ocfs2_susp_quotas(osb
, 1);
710 ret
= ocfs2_enable_quotas(osb
);
712 /* Return back changes... */
713 spin_lock(&osb
->osb_lock
);
714 sb
->s_flags
|= MS_RDONLY
;
715 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
716 spin_unlock(&osb
->osb_lock
);
723 /* Only save off the new mount options in case of a successful
725 osb
->s_mount_opt
= parsed_options
.mount_opt
;
726 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
727 osb
->preferred_slot
= parsed_options
.slot
;
728 if (parsed_options
.commit_interval
)
729 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
731 if (!ocfs2_is_hard_readonly(osb
))
732 ocfs2_set_journal_params(osb
);
734 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
735 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ?
742 static int ocfs2_sb_probe(struct super_block
*sb
,
743 struct buffer_head
**bh
,
745 struct ocfs2_blockcheck_stats
*stats
)
748 struct ocfs1_vol_disk_hdr
*hdr
;
749 struct ocfs2_dinode
*di
;
755 *sector_size
= bdev_logical_block_size(sb
->s_bdev
);
756 if (*sector_size
> OCFS2_MAX_BLOCKSIZE
) {
757 mlog(ML_ERROR
, "Hardware sector size too large: %d (max=%d)\n",
758 *sector_size
, OCFS2_MAX_BLOCKSIZE
);
763 /* Can this really happen? */
764 if (*sector_size
< OCFS2_MIN_BLOCKSIZE
)
765 *sector_size
= OCFS2_MIN_BLOCKSIZE
;
767 /* check block zero for old format */
768 status
= ocfs2_get_sector(sb
, bh
, 0, *sector_size
);
773 hdr
= (struct ocfs1_vol_disk_hdr
*) (*bh
)->b_data
;
774 if (hdr
->major_version
== OCFS1_MAJOR_VERSION
) {
775 mlog(ML_ERROR
, "incompatible version: %u.%u\n",
776 hdr
->major_version
, hdr
->minor_version
);
779 if (memcmp(hdr
->signature
, OCFS1_VOLUME_SIGNATURE
,
780 strlen(OCFS1_VOLUME_SIGNATURE
)) == 0) {
781 mlog(ML_ERROR
, "incompatible volume signature: %8s\n",
788 mlog(ML_ERROR
, "This is an ocfs v1 filesystem which must be "
789 "upgraded before mounting with ocfs v2\n");
794 * Now check at magic offset for 512, 1024, 2048, 4096
795 * blocksizes. 4096 is the maximum blocksize because it is
796 * the minimum clustersize.
799 for (blksize
= *sector_size
;
800 blksize
<= OCFS2_MAX_BLOCKSIZE
;
802 tmpstat
= ocfs2_get_sector(sb
, bh
,
803 OCFS2_SUPER_BLOCK_BLKNO
,
810 di
= (struct ocfs2_dinode
*) (*bh
)->b_data
;
811 memset(stats
, 0, sizeof(struct ocfs2_blockcheck_stats
));
812 spin_lock_init(&stats
->b_lock
);
813 tmpstat
= ocfs2_verify_volume(di
, *bh
, blksize
, stats
);
818 if (tmpstat
!= -EAGAIN
) {
828 static int ocfs2_verify_heartbeat(struct ocfs2_super
*osb
)
830 u32 hb_enabled
= OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
;
832 if (osb
->s_mount_opt
& hb_enabled
) {
833 if (ocfs2_mount_local(osb
)) {
834 mlog(ML_ERROR
, "Cannot heartbeat on a locally "
835 "mounted device.\n");
838 if (ocfs2_userspace_stack(osb
)) {
839 mlog(ML_ERROR
, "Userspace stack expected, but "
840 "o2cb heartbeat arguments passed to mount\n");
843 if (((osb
->s_mount_opt
& OCFS2_MOUNT_HB_GLOBAL
) &&
844 !ocfs2_cluster_o2cb_global_heartbeat(osb
)) ||
845 ((osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) &&
846 ocfs2_cluster_o2cb_global_heartbeat(osb
))) {
847 mlog(ML_ERROR
, "Mismatching o2cb heartbeat modes\n");
852 if (!(osb
->s_mount_opt
& hb_enabled
)) {
853 if (!ocfs2_mount_local(osb
) && !ocfs2_is_hard_readonly(osb
) &&
854 !ocfs2_userspace_stack(osb
)) {
855 mlog(ML_ERROR
, "Heartbeat has to be started to mount "
856 "a read-write clustered device.\n");
865 * If we're using a userspace stack, mount should have passed
866 * a name that matches the disk. If not, mount should not
867 * have passed a stack.
869 static int ocfs2_verify_userspace_stack(struct ocfs2_super
*osb
,
870 struct mount_options
*mopt
)
872 if (!ocfs2_userspace_stack(osb
) && mopt
->cluster_stack
[0]) {
874 "cluster stack passed to mount, but this filesystem "
875 "does not support it\n");
879 if (ocfs2_userspace_stack(osb
) &&
880 strncmp(osb
->osb_cluster_stack
, mopt
->cluster_stack
,
881 OCFS2_STACK_LABEL_LEN
)) {
883 "cluster stack passed to mount (\"%s\") does not "
884 "match the filesystem (\"%s\")\n",
886 osb
->osb_cluster_stack
);
893 static int ocfs2_susp_quotas(struct ocfs2_super
*osb
, int unsuspend
)
896 struct super_block
*sb
= osb
->sb
;
897 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
898 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
901 for (type
= 0; type
< MAXQUOTAS
; type
++) {
902 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
905 status
= dquot_resume(sb
, type
);
907 struct ocfs2_mem_dqinfo
*oinfo
;
909 /* Cancel periodic syncing before suspending */
910 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
911 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
912 status
= dquot_suspend(sb
, type
);
918 mlog(ML_ERROR
, "Failed to suspend/unsuspend quotas on "
919 "remount (error = %d).\n", status
);
923 static int ocfs2_enable_quotas(struct ocfs2_super
*osb
)
925 struct inode
*inode
[MAXQUOTAS
] = { NULL
, NULL
};
926 struct super_block
*sb
= osb
->sb
;
927 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
928 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
929 unsigned int ino
[MAXQUOTAS
] = { LOCAL_USER_QUOTA_SYSTEM_INODE
,
930 LOCAL_GROUP_QUOTA_SYSTEM_INODE
};
934 sb_dqopt(sb
)->flags
|= DQUOT_QUOTA_SYS_FILE
| DQUOT_NEGATIVE_USAGE
;
935 for (type
= 0; type
< MAXQUOTAS
; type
++) {
936 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
938 inode
[type
] = ocfs2_get_system_file_inode(osb
, ino
[type
],
944 status
= dquot_enable(inode
[type
], type
, QFMT_OCFS2
,
945 DQUOT_USAGE_ENABLED
);
950 for (type
= 0; type
< MAXQUOTAS
; type
++)
954 ocfs2_disable_quotas(osb
);
955 for (type
= 0; type
< MAXQUOTAS
; type
++)
961 static void ocfs2_disable_quotas(struct ocfs2_super
*osb
)
965 struct super_block
*sb
= osb
->sb
;
966 struct ocfs2_mem_dqinfo
*oinfo
;
968 /* We mostly ignore errors in this function because there's not much
969 * we can do when we see them */
970 for (type
= 0; type
< MAXQUOTAS
; type
++) {
971 if (!sb_has_quota_loaded(sb
, type
))
973 /* Cancel periodic syncing before we grab dqonoff_mutex */
974 oinfo
= sb_dqinfo(sb
, type
)->dqi_priv
;
975 cancel_delayed_work_sync(&oinfo
->dqi_sync_work
);
976 inode
= igrab(sb
->s_dquot
.files
[type
]);
977 /* Turn off quotas. This will remove all dquot structures from
978 * memory and so they will be automatically synced to global
980 dquot_disable(sb
, type
, DQUOT_USAGE_ENABLED
|
981 DQUOT_LIMITS_ENABLED
);
988 /* Handle quota on quotactl */
989 static int ocfs2_quota_on(struct super_block
*sb
, int type
, int format_id
)
991 unsigned int feature
[MAXQUOTAS
] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA
,
992 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
};
994 if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb
, feature
[type
]))
997 return dquot_enable(sb_dqopt(sb
)->files
[type
], type
,
998 format_id
, DQUOT_LIMITS_ENABLED
);
1001 /* Handle quota off quotactl */
1002 static int ocfs2_quota_off(struct super_block
*sb
, int type
)
1004 return dquot_disable(sb
, type
, DQUOT_LIMITS_ENABLED
);
1007 static const struct quotactl_ops ocfs2_quotactl_ops
= {
1008 .quota_on_meta
= ocfs2_quota_on
,
1009 .quota_off
= ocfs2_quota_off
,
1010 .quota_sync
= dquot_quota_sync
,
1011 .get_info
= dquot_get_dqinfo
,
1012 .set_info
= dquot_set_dqinfo
,
1013 .get_dqblk
= dquot_get_dqblk
,
1014 .set_dqblk
= dquot_set_dqblk
,
1017 static int ocfs2_fill_super(struct super_block
*sb
, void *data
, int silent
)
1019 struct dentry
*root
;
1020 int status
, sector_size
;
1021 struct mount_options parsed_options
;
1022 struct inode
*inode
= NULL
;
1023 struct ocfs2_super
*osb
= NULL
;
1024 struct buffer_head
*bh
= NULL
;
1026 struct ocfs2_blockcheck_stats stats
;
1028 trace_ocfs2_fill_super(sb
, data
, silent
);
1030 if (!ocfs2_parse_options(sb
, data
, &parsed_options
, 0)) {
1032 goto read_super_error
;
1035 /* probe for superblock */
1036 status
= ocfs2_sb_probe(sb
, &bh
, §or_size
, &stats
);
1038 mlog(ML_ERROR
, "superblock probe failed!\n");
1039 goto read_super_error
;
1042 status
= ocfs2_initialize_super(sb
, bh
, sector_size
, &stats
);
1046 goto read_super_error
;
1051 if (!ocfs2_check_set_options(sb
, &parsed_options
)) {
1053 goto read_super_error
;
1055 osb
->s_mount_opt
= parsed_options
.mount_opt
;
1056 osb
->s_atime_quantum
= parsed_options
.atime_quantum
;
1057 osb
->preferred_slot
= parsed_options
.slot
;
1058 osb
->osb_commit_interval
= parsed_options
.commit_interval
;
1060 ocfs2_la_set_sizes(osb
, parsed_options
.localalloc_opt
);
1061 osb
->osb_resv_level
= parsed_options
.resv_level
;
1062 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1063 if (parsed_options
.dir_resv_level
== -1)
1064 osb
->osb_dir_resv_level
= parsed_options
.resv_level
;
1066 osb
->osb_dir_resv_level
= parsed_options
.dir_resv_level
;
1068 status
= ocfs2_verify_userspace_stack(osb
, &parsed_options
);
1070 goto read_super_error
;
1072 sb
->s_magic
= OCFS2_SUPER_MAGIC
;
1074 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
1075 ((osb
->s_mount_opt
& OCFS2_MOUNT_POSIX_ACL
) ? MS_POSIXACL
: 0);
1077 /* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
1079 if (bdev_read_only(sb
->s_bdev
)) {
1080 if (!(sb
->s_flags
& MS_RDONLY
)) {
1082 mlog(ML_ERROR
, "Readonly device detected but readonly "
1083 "mount was not specified.\n");
1084 goto read_super_error
;
1087 /* You should not be able to start a local heartbeat
1088 * on a readonly device. */
1089 if (osb
->s_mount_opt
& OCFS2_MOUNT_HB_LOCAL
) {
1091 mlog(ML_ERROR
, "Local heartbeat specified on readonly "
1093 goto read_super_error
;
1096 status
= ocfs2_check_journals_nolocks(osb
);
1098 if (status
== -EROFS
)
1099 mlog(ML_ERROR
, "Recovery required on readonly "
1100 "file system, but write access is "
1104 goto read_super_error
;
1107 ocfs2_set_ro_flag(osb
, 1);
1109 printk(KERN_NOTICE
"Readonly device detected. No cluster "
1110 "services will be utilized for this mount. Recovery "
1111 "will be skipped.\n");
1114 if (!ocfs2_is_hard_readonly(osb
)) {
1115 if (sb
->s_flags
& MS_RDONLY
)
1116 ocfs2_set_ro_flag(osb
, 0);
1119 status
= ocfs2_verify_heartbeat(osb
);
1122 goto read_super_error
;
1125 osb
->osb_debug_root
= debugfs_create_dir(osb
->uuid_str
,
1126 ocfs2_debugfs_root
);
1127 if (!osb
->osb_debug_root
) {
1129 mlog(ML_ERROR
, "Unable to create per-mount debugfs root.\n");
1130 goto read_super_error
;
1133 osb
->osb_ctxt
= debugfs_create_file("fs_state", S_IFREG
|S_IRUSR
,
1134 osb
->osb_debug_root
,
1136 &ocfs2_osb_debug_fops
);
1137 if (!osb
->osb_ctxt
) {
1140 goto read_super_error
;
1143 if (ocfs2_meta_ecc(osb
)) {
1144 status
= ocfs2_blockcheck_stats_debugfs_install(
1145 &osb
->osb_ecc_stats
,
1146 osb
->osb_debug_root
);
1149 "Unable to create blockcheck statistics "
1151 goto read_super_error
;
1155 status
= ocfs2_mount_volume(sb
);
1156 if (osb
->root_inode
)
1157 inode
= igrab(osb
->root_inode
);
1160 goto read_super_error
;
1165 goto read_super_error
;
1168 root
= d_alloc_root(inode
);
1172 goto read_super_error
;
1177 ocfs2_complete_mount_recovery(osb
);
1179 if (ocfs2_mount_local(osb
))
1180 snprintf(nodestr
, sizeof(nodestr
), "local");
1182 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1184 printk(KERN_INFO
"ocfs2: Mounting device (%s) on (node %s, slot %d) "
1185 "with %s data mode.\n",
1186 osb
->dev_str
, nodestr
, osb
->slot_num
,
1187 osb
->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
? "writeback" :
1190 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED
);
1191 wake_up(&osb
->osb_mount_event
);
1193 /* Now we can initialize quotas because we can afford to wait
1194 * for cluster locks recovery now. That also means that truncation
1195 * log recovery can happen but that waits for proper quota setup */
1196 if (!(sb
->s_flags
& MS_RDONLY
)) {
1197 status
= ocfs2_enable_quotas(osb
);
1199 /* We have to err-out specially here because
1200 * s_root is already set */
1202 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1203 wake_up(&osb
->osb_mount_event
);
1208 ocfs2_complete_quota_recovery(osb
);
1210 /* Now we wake up again for processes waiting for quotas */
1211 atomic_set(&osb
->vol_state
, VOLUME_MOUNTED_QUOTAS
);
1212 wake_up(&osb
->osb_mount_event
);
1214 /* Start this when the mount is almost sure of being successful */
1215 ocfs2_orphan_scan_start(osb
);
1226 atomic_set(&osb
->vol_state
, VOLUME_DISABLED
);
1227 wake_up(&osb
->osb_mount_event
);
1228 ocfs2_dismount_volume(sb
, 1);
1236 static struct dentry
*ocfs2_mount(struct file_system_type
*fs_type
,
1238 const char *dev_name
,
1241 return mount_bdev(fs_type
, flags
, dev_name
, data
, ocfs2_fill_super
);
1244 static void ocfs2_kill_sb(struct super_block
*sb
)
1246 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1249 if (!osb
|| atomic_read(&osb
->vol_state
) == VOLUME_DISABLED
)
1252 /* Prevent further queueing of inode drop events */
1253 spin_lock(&dentry_list_lock
);
1254 ocfs2_set_osb_flag(osb
, OCFS2_OSB_DROP_DENTRY_LOCK_IMMED
);
1255 spin_unlock(&dentry_list_lock
);
1256 /* Wait for work to finish and/or remove it */
1257 cancel_work_sync(&osb
->dentry_lock_work
);
1259 kill_block_super(sb
);
1262 static struct file_system_type ocfs2_fs_type
= {
1263 .owner
= THIS_MODULE
,
1265 .mount
= ocfs2_mount
,
1266 .kill_sb
= ocfs2_kill_sb
,
1268 .fs_flags
= FS_REQUIRES_DEV
|FS_RENAME_DOES_D_MOVE
,
1272 static int ocfs2_check_set_options(struct super_block
*sb
,
1273 struct mount_options
*options
)
1275 if (options
->mount_opt
& OCFS2_MOUNT_USRQUOTA
&&
1276 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1277 OCFS2_FEATURE_RO_COMPAT_USRQUOTA
)) {
1278 mlog(ML_ERROR
, "User quotas were requested, but this "
1279 "filesystem does not have the feature enabled.\n");
1282 if (options
->mount_opt
& OCFS2_MOUNT_GRPQUOTA
&&
1283 !OCFS2_HAS_RO_COMPAT_FEATURE(sb
,
1284 OCFS2_FEATURE_RO_COMPAT_GRPQUOTA
)) {
1285 mlog(ML_ERROR
, "Group quotas were requested, but this "
1286 "filesystem does not have the feature enabled.\n");
1289 if (options
->mount_opt
& OCFS2_MOUNT_POSIX_ACL
&&
1290 !OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
)) {
1291 mlog(ML_ERROR
, "ACL support requested but extended attributes "
1292 "feature is not enabled\n");
1295 /* No ACL setting specified? Use XATTR feature... */
1296 if (!(options
->mount_opt
& (OCFS2_MOUNT_POSIX_ACL
|
1297 OCFS2_MOUNT_NO_POSIX_ACL
))) {
1298 if (OCFS2_HAS_INCOMPAT_FEATURE(sb
, OCFS2_FEATURE_INCOMPAT_XATTR
))
1299 options
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1301 options
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1306 static int ocfs2_parse_options(struct super_block
*sb
,
1308 struct mount_options
*mopt
,
1311 int status
, user_stack
= 0;
1315 trace_ocfs2_parse_options(is_remount
, options
? options
: "(none)");
1317 mopt
->commit_interval
= 0;
1318 mopt
->mount_opt
= OCFS2_MOUNT_NOINTR
;
1319 mopt
->atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
1320 mopt
->slot
= OCFS2_INVALID_SLOT
;
1321 mopt
->localalloc_opt
= -1;
1322 mopt
->cluster_stack
[0] = '\0';
1323 mopt
->resv_level
= OCFS2_DEFAULT_RESV_LEVEL
;
1324 mopt
->dir_resv_level
= -1;
1331 while ((p
= strsep(&options
, ",")) != NULL
) {
1333 substring_t args
[MAX_OPT_ARGS
];
1338 token
= match_token(p
, tokens
, args
);
1341 mopt
->mount_opt
|= OCFS2_MOUNT_HB_LOCAL
;
1344 mopt
->mount_opt
|= OCFS2_MOUNT_HB_NONE
;
1347 mopt
->mount_opt
|= OCFS2_MOUNT_HB_GLOBAL
;
1350 if (match_int(&args
[0], &option
)) {
1355 mopt
->mount_opt
|= OCFS2_MOUNT_BARRIER
;
1357 mopt
->mount_opt
&= ~OCFS2_MOUNT_BARRIER
;
1360 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOINTR
;
1363 mopt
->mount_opt
|= OCFS2_MOUNT_NOINTR
;
1366 mopt
->mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
1369 mopt
->mount_opt
&= ~OCFS2_MOUNT_ERRORS_PANIC
;
1371 case Opt_data_ordered
:
1372 mopt
->mount_opt
&= ~OCFS2_MOUNT_DATA_WRITEBACK
;
1374 case Opt_data_writeback
:
1375 mopt
->mount_opt
|= OCFS2_MOUNT_DATA_WRITEBACK
;
1377 case Opt_user_xattr
:
1378 mopt
->mount_opt
&= ~OCFS2_MOUNT_NOUSERXATTR
;
1380 case Opt_nouser_xattr
:
1381 mopt
->mount_opt
|= OCFS2_MOUNT_NOUSERXATTR
;
1383 case Opt_atime_quantum
:
1384 if (match_int(&args
[0], &option
)) {
1389 mopt
->atime_quantum
= option
;
1393 if (match_int(&args
[0], &option
)) {
1398 mopt
->slot
= (s16
)option
;
1402 if (match_int(&args
[0], &option
)) {
1409 option
= JBD2_DEFAULT_MAX_COMMIT_AGE
;
1410 mopt
->commit_interval
= HZ
* option
;
1412 case Opt_localalloc
:
1414 if (match_int(&args
[0], &option
)) {
1419 mopt
->localalloc_opt
= option
;
1421 case Opt_localflocks
:
1423 * Changing this during remount could race
1424 * flock() requests, or "unbalance" existing
1425 * ones (e.g., a lock is taken in one mode but
1426 * dropped in the other). If users care enough
1427 * to flip locking modes during remount, we
1428 * could add a "local" flag to individual
1429 * flock structures for proper tracking of
1433 mopt
->mount_opt
|= OCFS2_MOUNT_LOCALFLOCKS
;
1436 /* Check both that the option we were passed
1437 * is of the right length and that it is a proper
1438 * string of the right length.
1440 if (((args
[0].to
- args
[0].from
) !=
1441 OCFS2_STACK_LABEL_LEN
) ||
1442 (strnlen(args
[0].from
,
1443 OCFS2_STACK_LABEL_LEN
) !=
1444 OCFS2_STACK_LABEL_LEN
)) {
1446 "Invalid cluster_stack option\n");
1450 memcpy(mopt
->cluster_stack
, args
[0].from
,
1451 OCFS2_STACK_LABEL_LEN
);
1452 mopt
->cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
1454 * Open code the memcmp here as we don't have
1456 * ocfs2_userspace_stack().
1458 if (memcmp(mopt
->cluster_stack
,
1459 OCFS2_CLASSIC_CLUSTER_STACK
,
1460 OCFS2_STACK_LABEL_LEN
))
1464 mopt
->mount_opt
|= OCFS2_MOUNT_INODE64
;
1467 mopt
->mount_opt
|= OCFS2_MOUNT_USRQUOTA
;
1470 mopt
->mount_opt
|= OCFS2_MOUNT_GRPQUOTA
;
1472 case Opt_coherency_buffered
:
1473 mopt
->mount_opt
|= OCFS2_MOUNT_COHERENCY_BUFFERED
;
1475 case Opt_coherency_full
:
1476 mopt
->mount_opt
&= ~OCFS2_MOUNT_COHERENCY_BUFFERED
;
1479 mopt
->mount_opt
|= OCFS2_MOUNT_POSIX_ACL
;
1480 mopt
->mount_opt
&= ~OCFS2_MOUNT_NO_POSIX_ACL
;
1483 mopt
->mount_opt
|= OCFS2_MOUNT_NO_POSIX_ACL
;
1484 mopt
->mount_opt
&= ~OCFS2_MOUNT_POSIX_ACL
;
1486 case Opt_resv_level
:
1489 if (match_int(&args
[0], &option
)) {
1493 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1494 option
< OCFS2_MAX_RESV_LEVEL
)
1495 mopt
->resv_level
= option
;
1497 case Opt_dir_resv_level
:
1500 if (match_int(&args
[0], &option
)) {
1504 if (option
>= OCFS2_MIN_RESV_LEVEL
&&
1505 option
< OCFS2_MAX_RESV_LEVEL
)
1506 mopt
->dir_resv_level
= option
;
1510 "Unrecognized mount option \"%s\" "
1511 "or missing value\n", p
);
1517 if (user_stack
== 0) {
1518 /* Ensure only one heartbeat mode */
1519 tmp
= mopt
->mount_opt
& (OCFS2_MOUNT_HB_LOCAL
|
1520 OCFS2_MOUNT_HB_GLOBAL
|
1521 OCFS2_MOUNT_HB_NONE
);
1522 if (hweight32(tmp
) != 1) {
1523 mlog(ML_ERROR
, "Invalid heartbeat mount options\n");
1535 static int ocfs2_show_options(struct seq_file
*s
, struct vfsmount
*mnt
)
1537 struct ocfs2_super
*osb
= OCFS2_SB(mnt
->mnt_sb
);
1538 unsigned long opts
= osb
->s_mount_opt
;
1539 unsigned int local_alloc_megs
;
1541 if (opts
& (OCFS2_MOUNT_HB_LOCAL
| OCFS2_MOUNT_HB_GLOBAL
)) {
1542 seq_printf(s
, ",_netdev");
1543 if (opts
& OCFS2_MOUNT_HB_LOCAL
)
1544 seq_printf(s
, ",%s", OCFS2_HB_LOCAL
);
1546 seq_printf(s
, ",%s", OCFS2_HB_GLOBAL
);
1548 seq_printf(s
, ",%s", OCFS2_HB_NONE
);
1550 if (opts
& OCFS2_MOUNT_NOINTR
)
1551 seq_printf(s
, ",nointr");
1553 if (opts
& OCFS2_MOUNT_DATA_WRITEBACK
)
1554 seq_printf(s
, ",data=writeback");
1556 seq_printf(s
, ",data=ordered");
1558 if (opts
& OCFS2_MOUNT_BARRIER
)
1559 seq_printf(s
, ",barrier=1");
1561 if (opts
& OCFS2_MOUNT_ERRORS_PANIC
)
1562 seq_printf(s
, ",errors=panic");
1564 seq_printf(s
, ",errors=remount-ro");
1566 if (osb
->preferred_slot
!= OCFS2_INVALID_SLOT
)
1567 seq_printf(s
, ",preferred_slot=%d", osb
->preferred_slot
);
1569 if (osb
->s_atime_quantum
!= OCFS2_DEFAULT_ATIME_QUANTUM
)
1570 seq_printf(s
, ",atime_quantum=%u", osb
->s_atime_quantum
);
1572 if (osb
->osb_commit_interval
)
1573 seq_printf(s
, ",commit=%u",
1574 (unsigned) (osb
->osb_commit_interval
/ HZ
));
1576 local_alloc_megs
= osb
->local_alloc_bits
>> (20 - osb
->s_clustersize_bits
);
1577 if (local_alloc_megs
!= ocfs2_la_default_mb(osb
))
1578 seq_printf(s
, ",localalloc=%d", local_alloc_megs
);
1580 if (opts
& OCFS2_MOUNT_LOCALFLOCKS
)
1581 seq_printf(s
, ",localflocks,");
1583 if (osb
->osb_cluster_stack
[0])
1584 seq_printf(s
, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN
,
1585 osb
->osb_cluster_stack
);
1586 if (opts
& OCFS2_MOUNT_USRQUOTA
)
1587 seq_printf(s
, ",usrquota");
1588 if (opts
& OCFS2_MOUNT_GRPQUOTA
)
1589 seq_printf(s
, ",grpquota");
1591 if (opts
& OCFS2_MOUNT_COHERENCY_BUFFERED
)
1592 seq_printf(s
, ",coherency=buffered");
1594 seq_printf(s
, ",coherency=full");
1596 if (opts
& OCFS2_MOUNT_NOUSERXATTR
)
1597 seq_printf(s
, ",nouser_xattr");
1599 seq_printf(s
, ",user_xattr");
1601 if (opts
& OCFS2_MOUNT_INODE64
)
1602 seq_printf(s
, ",inode64");
1604 if (opts
& OCFS2_MOUNT_POSIX_ACL
)
1605 seq_printf(s
, ",acl");
1607 seq_printf(s
, ",noacl");
1609 if (osb
->osb_resv_level
!= OCFS2_DEFAULT_RESV_LEVEL
)
1610 seq_printf(s
, ",resv_level=%d", osb
->osb_resv_level
);
1612 if (osb
->osb_dir_resv_level
!= osb
->osb_resv_level
)
1613 seq_printf(s
, ",dir_resv_level=%d", osb
->osb_resv_level
);
1618 static int __init
ocfs2_init(void)
1622 ocfs2_print_version();
1624 status
= init_ocfs2_uptodate_cache();
1630 status
= ocfs2_initialize_mem_caches();
1636 ocfs2_wq
= create_singlethread_workqueue("ocfs2_wq");
1642 ocfs2_debugfs_root
= debugfs_create_dir("ocfs2", NULL
);
1643 if (!ocfs2_debugfs_root
) {
1645 mlog(ML_ERROR
, "Unable to create ocfs2 debugfs root.\n");
1648 ocfs2_set_locking_protocol();
1650 status
= register_quota_format(&ocfs2_quota_format
);
1653 ocfs2_free_mem_caches();
1654 exit_ocfs2_uptodate_cache();
1659 return register_filesystem(&ocfs2_fs_type
);
1664 static void __exit
ocfs2_exit(void)
1667 flush_workqueue(ocfs2_wq
);
1668 destroy_workqueue(ocfs2_wq
);
1671 unregister_quota_format(&ocfs2_quota_format
);
1673 debugfs_remove(ocfs2_debugfs_root
);
1675 ocfs2_free_mem_caches();
1677 unregister_filesystem(&ocfs2_fs_type
);
1679 exit_ocfs2_uptodate_cache();
1682 static void ocfs2_put_super(struct super_block
*sb
)
1684 trace_ocfs2_put_super(sb
);
1686 ocfs2_sync_blockdev(sb
);
1687 ocfs2_dismount_volume(sb
, 0);
1690 static int ocfs2_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
1692 struct ocfs2_super
*osb
;
1693 u32 numbits
, freebits
;
1695 struct ocfs2_dinode
*bm_lock
;
1696 struct buffer_head
*bh
= NULL
;
1697 struct inode
*inode
= NULL
;
1699 trace_ocfs2_statfs(dentry
->d_sb
, buf
);
1701 osb
= OCFS2_SB(dentry
->d_sb
);
1703 inode
= ocfs2_get_system_file_inode(osb
,
1704 GLOBAL_BITMAP_SYSTEM_INODE
,
1705 OCFS2_INVALID_SLOT
);
1707 mlog(ML_ERROR
, "failed to get bitmap inode\n");
1712 status
= ocfs2_inode_lock(inode
, &bh
, 0);
1718 bm_lock
= (struct ocfs2_dinode
*) bh
->b_data
;
1720 numbits
= le32_to_cpu(bm_lock
->id1
.bitmap1
.i_total
);
1721 freebits
= numbits
- le32_to_cpu(bm_lock
->id1
.bitmap1
.i_used
);
1723 buf
->f_type
= OCFS2_SUPER_MAGIC
;
1724 buf
->f_bsize
= dentry
->d_sb
->s_blocksize
;
1725 buf
->f_namelen
= OCFS2_MAX_FILENAME_LEN
;
1726 buf
->f_blocks
= ((sector_t
) numbits
) *
1727 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1728 buf
->f_bfree
= ((sector_t
) freebits
) *
1729 (osb
->s_clustersize
>> osb
->sb
->s_blocksize_bits
);
1730 buf
->f_bavail
= buf
->f_bfree
;
1731 buf
->f_files
= numbits
;
1732 buf
->f_ffree
= freebits
;
1733 buf
->f_fsid
.val
[0] = crc32_le(0, osb
->uuid_str
, OCFS2_VOL_UUID_LEN
)
1735 buf
->f_fsid
.val
[1] = crc32_le(0, osb
->uuid_str
+ OCFS2_VOL_UUID_LEN
,
1736 OCFS2_VOL_UUID_LEN
) & 0xFFFFFFFFUL
;
1740 ocfs2_inode_unlock(inode
, 0);
1752 static void ocfs2_inode_init_once(void *data
)
1754 struct ocfs2_inode_info
*oi
= data
;
1757 oi
->ip_open_count
= 0;
1758 spin_lock_init(&oi
->ip_lock
);
1759 ocfs2_extent_map_init(&oi
->vfs_inode
);
1760 INIT_LIST_HEAD(&oi
->ip_io_markers
);
1761 oi
->ip_dir_start_lookup
= 0;
1763 init_rwsem(&oi
->ip_alloc_sem
);
1764 init_rwsem(&oi
->ip_xattr_sem
);
1765 mutex_init(&oi
->ip_io_mutex
);
1767 oi
->ip_blkno
= 0ULL;
1768 oi
->ip_clusters
= 0;
1770 ocfs2_resv_init_once(&oi
->ip_la_data_resv
);
1772 ocfs2_lock_res_init_once(&oi
->ip_rw_lockres
);
1773 ocfs2_lock_res_init_once(&oi
->ip_inode_lockres
);
1774 ocfs2_lock_res_init_once(&oi
->ip_open_lockres
);
1776 ocfs2_metadata_cache_init(INODE_CACHE(&oi
->vfs_inode
),
1777 &ocfs2_inode_caching_ops
);
1779 inode_init_once(&oi
->vfs_inode
);
1782 static int ocfs2_initialize_mem_caches(void)
1784 ocfs2_inode_cachep
= kmem_cache_create("ocfs2_inode_cache",
1785 sizeof(struct ocfs2_inode_info
),
1787 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1789 ocfs2_inode_init_once
);
1790 ocfs2_dquot_cachep
= kmem_cache_create("ocfs2_dquot_cache",
1791 sizeof(struct ocfs2_dquot
),
1793 (SLAB_HWCACHE_ALIGN
|SLAB_RECLAIM_ACCOUNT
|
1796 ocfs2_qf_chunk_cachep
= kmem_cache_create("ocfs2_qf_chunk_cache",
1797 sizeof(struct ocfs2_quota_chunk
),
1799 (SLAB_RECLAIM_ACCOUNT
|SLAB_MEM_SPREAD
),
1801 if (!ocfs2_inode_cachep
|| !ocfs2_dquot_cachep
||
1802 !ocfs2_qf_chunk_cachep
) {
1803 if (ocfs2_inode_cachep
)
1804 kmem_cache_destroy(ocfs2_inode_cachep
);
1805 if (ocfs2_dquot_cachep
)
1806 kmem_cache_destroy(ocfs2_dquot_cachep
);
1807 if (ocfs2_qf_chunk_cachep
)
1808 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1815 static void ocfs2_free_mem_caches(void)
1817 if (ocfs2_inode_cachep
)
1818 kmem_cache_destroy(ocfs2_inode_cachep
);
1819 ocfs2_inode_cachep
= NULL
;
1821 if (ocfs2_dquot_cachep
)
1822 kmem_cache_destroy(ocfs2_dquot_cachep
);
1823 ocfs2_dquot_cachep
= NULL
;
1825 if (ocfs2_qf_chunk_cachep
)
1826 kmem_cache_destroy(ocfs2_qf_chunk_cachep
);
1827 ocfs2_qf_chunk_cachep
= NULL
;
1830 static int ocfs2_get_sector(struct super_block
*sb
,
1831 struct buffer_head
**bh
,
1835 if (!sb_set_blocksize(sb
, sect_size
)) {
1836 mlog(ML_ERROR
, "unable to set blocksize\n");
1840 *bh
= sb_getblk(sb
, block
);
1846 if (!buffer_dirty(*bh
))
1847 clear_buffer_uptodate(*bh
);
1849 ll_rw_block(READ
, 1, bh
);
1850 wait_on_buffer(*bh
);
1851 if (!buffer_uptodate(*bh
)) {
1861 static int ocfs2_mount_volume(struct super_block
*sb
)
1864 int unlock_super
= 0;
1865 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
1867 if (ocfs2_is_hard_readonly(osb
))
1870 status
= ocfs2_dlm_init(osb
);
1876 status
= ocfs2_super_lock(osb
, 1);
1883 /* This will load up the node map and add ourselves to it. */
1884 status
= ocfs2_find_slot(osb
);
1890 /* load all node-local system inodes */
1891 status
= ocfs2_init_local_system_inodes(osb
);
1897 status
= ocfs2_check_volume(osb
);
1903 status
= ocfs2_truncate_log_init(osb
);
1909 ocfs2_super_unlock(osb
, 1);
1914 static void ocfs2_dismount_volume(struct super_block
*sb
, int mnt_err
)
1916 int tmp
, hangup_needed
= 0;
1917 struct ocfs2_super
*osb
= NULL
;
1920 trace_ocfs2_dismount_volume(sb
);
1926 debugfs_remove(osb
->osb_ctxt
);
1929 * Flush inode dropping work queue so that deletes are
1930 * performed while the filesystem is still working
1932 ocfs2_drop_all_dl_inodes(osb
);
1934 /* Orphan scan should be stopped as early as possible */
1935 ocfs2_orphan_scan_stop(osb
);
1937 ocfs2_disable_quotas(osb
);
1939 ocfs2_shutdown_local_alloc(osb
);
1941 ocfs2_truncate_log_shutdown(osb
);
1943 /* This will disable recovery and flush any recovery work. */
1944 ocfs2_recovery_exit(osb
);
1946 ocfs2_journal_shutdown(osb
);
1948 ocfs2_sync_blockdev(sb
);
1950 ocfs2_purge_refcount_trees(osb
);
1952 /* No cluster connection means we've failed during mount, so skip
1953 * all the steps which depended on that to complete. */
1955 tmp
= ocfs2_super_lock(osb
, 1);
1962 if (osb
->slot_num
!= OCFS2_INVALID_SLOT
)
1963 ocfs2_put_slot(osb
);
1966 ocfs2_super_unlock(osb
, 1);
1968 ocfs2_release_system_inodes(osb
);
1971 * If we're dismounting due to mount error, mount.ocfs2 will clean
1972 * up heartbeat. If we're a local mount, there is no heartbeat.
1973 * If we failed before we got a uuid_str yet, we can't stop
1974 * heartbeat. Otherwise, do it.
1976 if (!mnt_err
&& !ocfs2_mount_local(osb
) && osb
->uuid_str
)
1980 ocfs2_dlm_shutdown(osb
, hangup_needed
);
1982 ocfs2_blockcheck_stats_debugfs_remove(&osb
->osb_ecc_stats
);
1983 debugfs_remove(osb
->osb_debug_root
);
1986 ocfs2_cluster_hangup(osb
->uuid_str
, strlen(osb
->uuid_str
));
1988 atomic_set(&osb
->vol_state
, VOLUME_DISMOUNTED
);
1990 if (ocfs2_mount_local(osb
))
1991 snprintf(nodestr
, sizeof(nodestr
), "local");
1993 snprintf(nodestr
, sizeof(nodestr
), "%u", osb
->node_num
);
1995 printk(KERN_INFO
"ocfs2: Unmounting device (%s) on (node %s)\n",
1996 osb
->dev_str
, nodestr
);
1998 ocfs2_delete_osb(osb
);
2001 sb
->s_fs_info
= NULL
;
2004 static int ocfs2_setup_osb_uuid(struct ocfs2_super
*osb
, const unsigned char *uuid
,
2005 unsigned uuid_bytes
)
2010 BUG_ON(uuid_bytes
!= OCFS2_VOL_UUID_LEN
);
2012 osb
->uuid_str
= kzalloc(OCFS2_VOL_UUID_LEN
* 2 + 1, GFP_KERNEL
);
2013 if (osb
->uuid_str
== NULL
)
2016 for (i
= 0, ptr
= osb
->uuid_str
; i
< OCFS2_VOL_UUID_LEN
; i
++) {
2017 /* print with null */
2018 ret
= snprintf(ptr
, 3, "%02X", uuid
[i
]);
2019 if (ret
!= 2) /* drop super cleans up */
2021 /* then only advance past the last char */
2028 /* Make sure entire volume is addressable by our journal. Requires
2029 osb_clusters_at_boot to be valid and for the journal to have been
2030 initialized by ocfs2_journal_init(). */
2031 static int ocfs2_journal_addressable(struct ocfs2_super
*osb
)
2035 ocfs2_clusters_to_blocks(osb
->sb
,
2036 osb
->osb_clusters_at_boot
) - 1;
2038 /* 32-bit block number is always OK. */
2039 if (max_block
<= (u32
)~0ULL)
2042 /* Volume is "huge", so see if our journal is new enough to
2044 if (!(OCFS2_HAS_COMPAT_FEATURE(osb
->sb
,
2045 OCFS2_FEATURE_COMPAT_JBD2_SB
) &&
2046 jbd2_journal_check_used_features(osb
->journal
->j_journal
, 0, 0,
2047 JBD2_FEATURE_INCOMPAT_64BIT
))) {
2048 mlog(ML_ERROR
, "The journal cannot address the entire volume. "
2049 "Enable the 'block64' journal option with tunefs.ocfs2");
2058 static int ocfs2_initialize_super(struct super_block
*sb
,
2059 struct buffer_head
*bh
,
2061 struct ocfs2_blockcheck_stats
*stats
)
2064 int i
, cbits
, bbits
;
2065 struct ocfs2_dinode
*di
= (struct ocfs2_dinode
*)bh
->b_data
;
2066 struct inode
*inode
= NULL
;
2067 struct ocfs2_journal
*journal
;
2068 __le32 uuid_net_key
;
2069 struct ocfs2_super
*osb
;
2072 osb
= kzalloc(sizeof(struct ocfs2_super
), GFP_KERNEL
);
2079 sb
->s_fs_info
= osb
;
2080 sb
->s_op
= &ocfs2_sops
;
2081 sb
->s_d_op
= &ocfs2_dentry_ops
;
2082 sb
->s_export_op
= &ocfs2_export_ops
;
2083 sb
->s_qcop
= &ocfs2_quotactl_ops
;
2084 sb
->dq_op
= &ocfs2_quota_operations
;
2085 sb
->s_xattr
= ocfs2_xattr_handlers
;
2086 sb
->s_time_gran
= 1;
2087 sb
->s_flags
|= MS_NOATIME
;
2088 /* this is needed to support O_LARGEFILE */
2089 cbits
= le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2090 bbits
= le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
);
2091 sb
->s_maxbytes
= ocfs2_max_file_offset(bbits
, cbits
);
2093 osb
->osb_dx_mask
= (1 << (cbits
- bbits
)) - 1;
2095 for (i
= 0; i
< 3; i
++)
2096 osb
->osb_dx_seed
[i
] = le32_to_cpu(di
->id2
.i_super
.s_dx_seed
[i
]);
2097 osb
->osb_dx_seed
[3] = le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2100 /* Save off for ocfs2_rw_direct */
2101 osb
->s_sectsize_bits
= blksize_bits(sector_size
);
2102 BUG_ON(!osb
->s_sectsize_bits
);
2104 spin_lock_init(&osb
->dc_task_lock
);
2105 init_waitqueue_head(&osb
->dc_event
);
2106 osb
->dc_work_sequence
= 0;
2107 osb
->dc_wake_sequence
= 0;
2108 INIT_LIST_HEAD(&osb
->blocked_lock_list
);
2109 osb
->blocked_lock_count
= 0;
2110 spin_lock_init(&osb
->osb_lock
);
2111 spin_lock_init(&osb
->osb_xattr_lock
);
2112 ocfs2_init_steal_slots(osb
);
2114 atomic_set(&osb
->alloc_stats
.moves
, 0);
2115 atomic_set(&osb
->alloc_stats
.local_data
, 0);
2116 atomic_set(&osb
->alloc_stats
.bitmap_data
, 0);
2117 atomic_set(&osb
->alloc_stats
.bg_allocs
, 0);
2118 atomic_set(&osb
->alloc_stats
.bg_extends
, 0);
2120 /* Copy the blockcheck stats from the superblock probe */
2121 osb
->osb_ecc_stats
= *stats
;
2123 ocfs2_init_node_maps(osb
);
2125 snprintf(osb
->dev_str
, sizeof(osb
->dev_str
), "%u,%u",
2126 MAJOR(osb
->sb
->s_dev
), MINOR(osb
->sb
->s_dev
));
2128 osb
->max_slots
= le16_to_cpu(di
->id2
.i_super
.s_max_slots
);
2129 if (osb
->max_slots
> OCFS2_MAX_SLOTS
|| osb
->max_slots
== 0) {
2130 mlog(ML_ERROR
, "Invalid number of node slots (%u)\n",
2136 ocfs2_orphan_scan_init(osb
);
2138 status
= ocfs2_recovery_init(osb
);
2140 mlog(ML_ERROR
, "Unable to initialize recovery state\n");
2145 init_waitqueue_head(&osb
->checkpoint_event
);
2146 atomic_set(&osb
->needs_checkpoint
, 0);
2148 osb
->s_atime_quantum
= OCFS2_DEFAULT_ATIME_QUANTUM
;
2150 osb
->slot_num
= OCFS2_INVALID_SLOT
;
2152 osb
->s_xattr_inline_size
= le16_to_cpu(
2153 di
->id2
.i_super
.s_xattr_inline_size
);
2155 osb
->local_alloc_state
= OCFS2_LA_UNUSED
;
2156 osb
->local_alloc_bh
= NULL
;
2157 INIT_DELAYED_WORK(&osb
->la_enable_wq
, ocfs2_la_enable_worker
);
2159 init_waitqueue_head(&osb
->osb_mount_event
);
2161 status
= ocfs2_resmap_init(osb
, &osb
->osb_la_resmap
);
2167 osb
->vol_label
= kmalloc(OCFS2_MAX_VOL_LABEL_LEN
, GFP_KERNEL
);
2168 if (!osb
->vol_label
) {
2169 mlog(ML_ERROR
, "unable to alloc vol label\n");
2174 osb
->slot_recovery_generations
=
2175 kcalloc(osb
->max_slots
, sizeof(*osb
->slot_recovery_generations
),
2177 if (!osb
->slot_recovery_generations
) {
2183 init_waitqueue_head(&osb
->osb_wipe_event
);
2184 osb
->osb_orphan_wipes
= kcalloc(osb
->max_slots
,
2185 sizeof(*osb
->osb_orphan_wipes
),
2187 if (!osb
->osb_orphan_wipes
) {
2193 osb
->osb_rf_lock_tree
= RB_ROOT
;
2195 osb
->s_feature_compat
=
2196 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_compat
);
2197 osb
->s_feature_ro_compat
=
2198 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_ro_compat
);
2199 osb
->s_feature_incompat
=
2200 le32_to_cpu(OCFS2_RAW_SB(di
)->s_feature_incompat
);
2202 if ((i
= OCFS2_HAS_INCOMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_INCOMPAT_SUPP
))) {
2203 mlog(ML_ERROR
, "couldn't mount because of unsupported "
2204 "optional features (%x).\n", i
);
2208 if (!(osb
->sb
->s_flags
& MS_RDONLY
) &&
2209 (i
= OCFS2_HAS_RO_COMPAT_FEATURE(osb
->sb
, ~OCFS2_FEATURE_RO_COMPAT_SUPP
))) {
2210 mlog(ML_ERROR
, "couldn't mount RDWR because of "
2211 "unsupported optional features (%x).\n", i
);
2216 if (ocfs2_clusterinfo_valid(osb
)) {
2217 osb
->osb_stackflags
=
2218 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stackflags
;
2219 memcpy(osb
->osb_cluster_stack
,
2220 OCFS2_RAW_SB(di
)->s_cluster_info
.ci_stack
,
2221 OCFS2_STACK_LABEL_LEN
);
2222 osb
->osb_cluster_stack
[OCFS2_STACK_LABEL_LEN
] = '\0';
2223 if (strlen(osb
->osb_cluster_stack
) != OCFS2_STACK_LABEL_LEN
) {
2225 "couldn't mount because of an invalid "
2226 "cluster stack label (%s) \n",
2227 osb
->osb_cluster_stack
);
2232 /* The empty string is identical with classic tools that
2233 * don't know about s_cluster_info. */
2234 osb
->osb_cluster_stack
[0] = '\0';
2237 get_random_bytes(&osb
->s_next_generation
, sizeof(u32
));
2240 * This should be done in ocfs2_journal_init(), but unknown
2241 * ordering issues will cause the filesystem to crash.
2242 * If anyone wants to figure out what part of the code
2243 * refers to osb->journal before ocfs2_journal_init() is run,
2246 /* initialize our journal structure */
2248 journal
= kzalloc(sizeof(struct ocfs2_journal
), GFP_KERNEL
);
2250 mlog(ML_ERROR
, "unable to alloc journal\n");
2254 osb
->journal
= journal
;
2255 journal
->j_osb
= osb
;
2257 atomic_set(&journal
->j_num_trans
, 0);
2258 init_rwsem(&journal
->j_trans_barrier
);
2259 init_waitqueue_head(&journal
->j_checkpointed
);
2260 spin_lock_init(&journal
->j_lock
);
2261 journal
->j_trans_id
= (unsigned long) 1;
2262 INIT_LIST_HEAD(&journal
->j_la_cleanups
);
2263 INIT_WORK(&journal
->j_recovery_work
, ocfs2_complete_recovery
);
2264 journal
->j_state
= OCFS2_JOURNAL_FREE
;
2266 INIT_WORK(&osb
->dentry_lock_work
, ocfs2_drop_dl_inodes
);
2267 osb
->dentry_lock_list
= NULL
;
2269 /* get some pseudo constants for clustersize bits */
2270 osb
->s_clustersize_bits
=
2271 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
);
2272 osb
->s_clustersize
= 1 << osb
->s_clustersize_bits
;
2274 if (osb
->s_clustersize
< OCFS2_MIN_CLUSTERSIZE
||
2275 osb
->s_clustersize
> OCFS2_MAX_CLUSTERSIZE
) {
2276 mlog(ML_ERROR
, "Volume has invalid cluster size (%d)\n",
2277 osb
->s_clustersize
);
2282 total_blocks
= ocfs2_clusters_to_blocks(osb
->sb
,
2283 le32_to_cpu(di
->i_clusters
));
2285 status
= generic_check_addressable(osb
->sb
->s_blocksize_bits
,
2288 mlog(ML_ERROR
, "Volume too large "
2289 "to mount safely on this system");
2294 if (ocfs2_setup_osb_uuid(osb
, di
->id2
.i_super
.s_uuid
,
2295 sizeof(di
->id2
.i_super
.s_uuid
))) {
2296 mlog(ML_ERROR
, "Out of memory trying to setup our uuid.\n");
2301 memcpy(&uuid_net_key
, di
->id2
.i_super
.s_uuid
, sizeof(uuid_net_key
));
2303 strncpy(osb
->vol_label
, di
->id2
.i_super
.s_label
, 63);
2304 osb
->vol_label
[63] = '\0';
2305 osb
->root_blkno
= le64_to_cpu(di
->id2
.i_super
.s_root_blkno
);
2306 osb
->system_dir_blkno
= le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
);
2307 osb
->first_cluster_group_blkno
=
2308 le64_to_cpu(di
->id2
.i_super
.s_first_cluster_group
);
2309 osb
->fs_generation
= le32_to_cpu(di
->i_fs_generation
);
2310 osb
->uuid_hash
= le32_to_cpu(di
->id2
.i_super
.s_uuid_hash
);
2311 trace_ocfs2_initialize_super(osb
->vol_label
, osb
->uuid_str
,
2312 (unsigned long long)osb
->root_blkno
,
2313 (unsigned long long)osb
->system_dir_blkno
,
2314 osb
->s_clustersize_bits
);
2316 osb
->osb_dlm_debug
= ocfs2_new_dlm_debug();
2317 if (!osb
->osb_dlm_debug
) {
2323 atomic_set(&osb
->vol_state
, VOLUME_INIT
);
2325 /* load root, system_dir, and all global system inodes */
2326 status
= ocfs2_init_global_system_inodes(osb
);
2335 inode
= ocfs2_get_system_file_inode(osb
, GLOBAL_BITMAP_SYSTEM_INODE
,
2336 OCFS2_INVALID_SLOT
);
2343 osb
->bitmap_blkno
= OCFS2_I(inode
)->ip_blkno
;
2344 osb
->osb_clusters_at_boot
= OCFS2_I(inode
)->ip_clusters
;
2347 osb
->bitmap_cpg
= ocfs2_group_bitmap_size(sb
, 0,
2348 osb
->s_feature_incompat
) * 8;
2350 status
= ocfs2_init_slot_info(osb
);
2361 * will return: -EAGAIN if it is ok to keep searching for superblocks
2362 * -EINVAL if there is a bad superblock
2365 static int ocfs2_verify_volume(struct ocfs2_dinode
*di
,
2366 struct buffer_head
*bh
,
2368 struct ocfs2_blockcheck_stats
*stats
)
2370 int status
= -EAGAIN
;
2372 if (memcmp(di
->i_signature
, OCFS2_SUPER_BLOCK_SIGNATURE
,
2373 strlen(OCFS2_SUPER_BLOCK_SIGNATURE
)) == 0) {
2374 /* We have to do a raw check of the feature here */
2375 if (le32_to_cpu(di
->id2
.i_super
.s_feature_incompat
) &
2376 OCFS2_FEATURE_INCOMPAT_META_ECC
) {
2377 status
= ocfs2_block_check_validate(bh
->b_data
,
2385 if ((1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
)) != blksz
) {
2386 mlog(ML_ERROR
, "found superblock with incorrect block "
2387 "size: found %u, should be %u\n",
2388 1 << le32_to_cpu(di
->id2
.i_super
.s_blocksize_bits
),
2390 } else if (le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
) !=
2391 OCFS2_MAJOR_REV_LEVEL
||
2392 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
) !=
2393 OCFS2_MINOR_REV_LEVEL
) {
2394 mlog(ML_ERROR
, "found superblock with bad version: "
2395 "found %u.%u, should be %u.%u\n",
2396 le16_to_cpu(di
->id2
.i_super
.s_major_rev_level
),
2397 le16_to_cpu(di
->id2
.i_super
.s_minor_rev_level
),
2398 OCFS2_MAJOR_REV_LEVEL
,
2399 OCFS2_MINOR_REV_LEVEL
);
2400 } else if (bh
->b_blocknr
!= le64_to_cpu(di
->i_blkno
)) {
2401 mlog(ML_ERROR
, "bad block number on superblock: "
2402 "found %llu, should be %llu\n",
2403 (unsigned long long)le64_to_cpu(di
->i_blkno
),
2404 (unsigned long long)bh
->b_blocknr
);
2405 } else if (le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) < 12 ||
2406 le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
) > 20) {
2407 mlog(ML_ERROR
, "bad cluster size found: %u\n",
2408 1 << le32_to_cpu(di
->id2
.i_super
.s_clustersize_bits
));
2409 } else if (!le64_to_cpu(di
->id2
.i_super
.s_root_blkno
)) {
2410 mlog(ML_ERROR
, "bad root_blkno: 0\n");
2411 } else if (!le64_to_cpu(di
->id2
.i_super
.s_system_dir_blkno
)) {
2412 mlog(ML_ERROR
, "bad system_dir_blkno: 0\n");
2413 } else if (le16_to_cpu(di
->id2
.i_super
.s_max_slots
) > OCFS2_MAX_SLOTS
) {
2415 "Superblock slots found greater than file system "
2416 "maximum: found %u, max %u\n",
2417 le16_to_cpu(di
->id2
.i_super
.s_max_slots
),
2426 if (status
&& status
!= -EAGAIN
)
2431 static int ocfs2_check_volume(struct ocfs2_super
*osb
)
2436 struct ocfs2_dinode
*local_alloc
= NULL
; /* only used if we
2440 /* Init our journal object. */
2441 status
= ocfs2_journal_init(osb
->journal
, &dirty
);
2443 mlog(ML_ERROR
, "Could not initialize journal!\n");
2447 /* Now that journal has been initialized, check to make sure
2448 entire volume is addressable. */
2449 status
= ocfs2_journal_addressable(osb
);
2453 /* If the journal was unmounted cleanly then we don't want to
2454 * recover anything. Otherwise, journal_load will do that
2455 * dirty work for us :) */
2457 status
= ocfs2_journal_wipe(osb
->journal
, 0);
2463 mlog(ML_NOTICE
, "File system was not unmounted cleanly, "
2464 "recovering volume.\n");
2467 local
= ocfs2_mount_local(osb
);
2469 /* will play back anything left in the journal. */
2470 status
= ocfs2_journal_load(osb
->journal
, local
, dirty
);
2472 mlog(ML_ERROR
, "ocfs2 journal load failed! %d\n", status
);
2477 /* recover my local alloc if we didn't unmount cleanly. */
2478 status
= ocfs2_begin_local_alloc_recovery(osb
,
2485 /* we complete the recovery process after we've marked
2486 * ourselves as mounted. */
2489 status
= ocfs2_load_local_alloc(osb
);
2496 /* Recovery will be completed after we've mounted the
2497 * rest of the volume. */
2499 osb
->local_alloc_copy
= local_alloc
;
2503 /* go through each journal, trylock it and if you get the
2504 * lock, and it's marked as dirty, set the bit in the recover
2505 * map and launch a recovery thread for it. */
2506 status
= ocfs2_mark_dead_nodes(osb
);
2512 status
= ocfs2_compute_replay_slots(osb
);
2526 * The routine gets called from dismount or close whenever a dismount on
2527 * volume is requested and the osb open count becomes 1.
2528 * It will remove the osb from the global list and also free up all the
2529 * initialized resources and fileobject.
2531 static void ocfs2_delete_osb(struct ocfs2_super
*osb
)
2533 /* This function assumes that the caller has the main osb resource */
2535 ocfs2_free_slot_info(osb
);
2537 kfree(osb
->osb_orphan_wipes
);
2538 kfree(osb
->slot_recovery_generations
);
2540 * This belongs in journal shutdown, but because we have to
2541 * allocate osb->journal at the start of ocfs2_initialize_osb(),
2544 kfree(osb
->journal
);
2545 if (osb
->local_alloc_copy
)
2546 kfree(osb
->local_alloc_copy
);
2547 kfree(osb
->uuid_str
);
2548 ocfs2_put_dlm_debug(osb
->osb_dlm_debug
);
2549 memset(osb
, 0, sizeof(struct ocfs2_super
));
2552 /* Put OCFS2 into a readonly state, or (if the user specifies it),
2553 * panic(). We do not support continue-on-error operation. */
2554 static void ocfs2_handle_error(struct super_block
*sb
)
2556 struct ocfs2_super
*osb
= OCFS2_SB(sb
);
2558 if (osb
->s_mount_opt
& OCFS2_MOUNT_ERRORS_PANIC
)
2559 panic("OCFS2: (device %s): panic forced after error\n",
2562 ocfs2_set_osb_flag(osb
, OCFS2_OSB_ERROR_FS
);
2564 if (sb
->s_flags
& MS_RDONLY
&&
2565 (ocfs2_is_soft_readonly(osb
) ||
2566 ocfs2_is_hard_readonly(osb
)))
2569 printk(KERN_CRIT
"File system is now read-only due to the potential "
2570 "of on-disk corruption. Please run fsck.ocfs2 once the file "
2571 "system is unmounted.\n");
2572 sb
->s_flags
|= MS_RDONLY
;
2573 ocfs2_set_ro_flag(osb
, 0);
2576 static char error_buf
[1024];
2578 void __ocfs2_error(struct super_block
*sb
,
2579 const char *function
,
2580 const char *fmt
, ...)
2584 va_start(args
, fmt
);
2585 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2588 /* Not using mlog here because we want to show the actual
2589 * function the error came from. */
2590 printk(KERN_CRIT
"OCFS2: ERROR (device %s): %s: %s\n",
2591 sb
->s_id
, function
, error_buf
);
2593 ocfs2_handle_error(sb
);
2596 /* Handle critical errors. This is intentionally more drastic than
2597 * ocfs2_handle_error, so we only use for things like journal errors,
2599 void __ocfs2_abort(struct super_block
* sb
,
2600 const char *function
,
2601 const char *fmt
, ...)
2605 va_start(args
, fmt
);
2606 vsnprintf(error_buf
, sizeof(error_buf
), fmt
, args
);
2609 printk(KERN_CRIT
"OCFS2: abort (device %s): %s: %s\n",
2610 sb
->s_id
, function
, error_buf
);
2612 /* We don't have the cluster support yet to go straight to
2613 * hard readonly in here. Until then, we want to keep
2614 * ocfs2_abort() so that we can at least mark critical
2617 * TODO: This should abort the journal and alert other nodes
2618 * that our slot needs recovery. */
2620 /* Force a panic(). This stinks, but it's better than letting
2621 * things continue without having a proper hard readonly
2623 if (!ocfs2_mount_local(OCFS2_SB(sb
)))
2624 OCFS2_SB(sb
)->s_mount_opt
|= OCFS2_MOUNT_ERRORS_PANIC
;
2625 ocfs2_handle_error(sb
);
2629 * Void signal blockers, because in-kernel sigprocmask() only fails
2630 * when SIG_* is wrong.
2632 void ocfs2_block_signals(sigset_t
*oldset
)
2637 sigfillset(&blocked
);
2638 rc
= sigprocmask(SIG_BLOCK
, &blocked
, oldset
);
2642 void ocfs2_unblock_signals(sigset_t
*oldset
)
2644 int rc
= sigprocmask(SIG_SETMASK
, oldset
, NULL
);
2648 module_init(ocfs2_init
);
2649 module_exit(ocfs2_exit
);